Differential operators

[gsomix]

What do you think if we add common differential operators like \grad, \div, \rot (\curl)? The only problem I see it's collision between \div (÷) symbol and divergence operator. But division symbol is rarely used, I think we can redefine it as \divsymb [1].

[1] See \div operator: http://www.dfcd.net/articles/latex/latex.html

[ForNeVeR]

While I have nothing against that, I think that generally we shouldn't collect all common TeX extensions and squash them into our XML files. I'm a fan of more component-wise approach: let's split these symbols and formulae to "modules" and allow the user to choose at runtime what modules he/she wants to be enabled.

So, if there aren't any direct need in these extensions (i.e. nobody wants them right now), I'd suggest to wait for #47 before solving this issue.

[Newlifer]

I second this!

[alexreg]

It would be nice, yep, but let's keep it in separate packages/modules as @ForNeVeR suggests.